ring main grouping factors

[pablod]

hi,

when i installed the cables for a ring in my own house i clippped the cables in the channeled wall leaving a cable width between (no correction factors). if you run the cable in pvc conduit which seems about 100 times quicker surely correction factors for grouping need to be used (0.8). do you sparkes work the figures out. and is it the same on the switchs for lighting circuits.

thanks

paul

 

[Engineer54]

How can you have a grouping derating factor, for a single circuit ?? Think about it!!!

 

[Paul.M]

How many cables are "grouped" together? I think you are confusing reference methods and cable grouping up.

 

[pablod]

ok thanks for that. ive been working on current carrying capacities and reading table 6c on the OSG has confused me when it comes to ring circuits. it does say rating factors for one circuit. must be miss interpreting what it is saying